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Mohr–Coulomb parameters_
| Layer | Depth | Shear | Bulk | Weight | Cohesion | Friction | Dilatancy |
|---|---|---|---|---|---|---|---|
| m | MPa | MPa | kN/m3 | KPa | ° | ° | |
| Fill | 0–7 | 2.92 | 7.8 | 18 | 30 | 30 | 17 |
| Beige silt | 7–10 | 2.74 | 7.3 | 19.5 | 12 | 33 | 20 |
| Ocher silt | 10–13 | 2.74 | 7.3 | 21 | 15 | 25 | 14 |
| Grey clay | 13–15 | 1.57 | 4.2 | 16.5 | 35 | 27 | 15 |
| Grey sand | 15–17.5 | 10.50 | 28 | 21 | 5 | 35 | 21 |
| Purplish clay | 17.5–20 | 5.16 | 13.8 | 18.5 | 35 | 27 | 15 |
| Sand and gravel | 20–50 | 10.50 | 28 | 21 | 0 | 34 | 20 |
The properties of grout in modeling_
| Grout | Unit weight | Young’s modulus | Poisson ratio | Bulk modulus (K) | Shear modulus (G) | K/G |
|---|---|---|---|---|---|---|
| Fluid state | 18 | 5 | 0.495 | 166.7 | 1.7 | 99.7 |
| Solid state | 18 | 30 | 0.20 | 16.7 | 12.5 | 1.3 |
Tunnel parameters_
| Section | H | L | C/D | Hw | Dext | Dint | D/2 | Φext | Φint | Liner width | Liner thickness |
|---|---|---|---|---|---|---|---|---|---|---|---|
| P1-S1 | 16.9 | 7.0 | 2.20 | 8.30 | 6.27 | 6.24 | 15 | 6.0 | 5.3 | 100 | 35 |